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Quiz 2
Solution
Q.1.
Which of the following is NOT a carbohydrate?
Glucose
Lactose
Insulin
Starch
Sucrose
Q.2.
Which of the following is an organic compound?
H2O
C6H12O6
NH2
OH
Q.3.
Why does ice float?
As water freezes, it expands and its density decreases.
As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
Q.4.
A base is a substance that
releases Hydroxide ions when dissolved in water
releases Hydrogen ions when dissolved in water
does not release any ions when dissolved in water
Q.5.
How many different amino acids are there?
4
20
6
46
Q.6.
Nucleotides are monomers of
Carbohydrates
Lipids
Proteins
Nucleic Acids
Q.7.
What is the monomer of a lipid?
Nucleotide
Fatty Acid & Glycerol
Polysaccharide
Amino Acid
Q.8.
Lipids are made of
Fatty acid only
Glycerol only
Both glycerol and fatty acid
Non of the above
Q.9.
Monosaccharides are monomers of
Carbohydrates
Lipids
Proteins
Nucleic Acids
Q.10.
What elements make up carbohydrates?
carbon, nitrogen, hydrogen, oxygen
carbon, oxygen, phosphours
carbon, nitrogen, oxygen
carbon, hydrogen, oxygen
Q.11.
What is the purpose of an enzyme?
block an unwanted chemical reaction
create activation energy
cause or speed up a chemical reaction
permanently bond with a substrate
Q.12.
Butter is an example of a
carbohydrate
unsaturated fat
saturated fat
protein
Q.13.
Which is not an example of a lipid?
lettuce
olive oil
butter
bacon fat
Q.14.
What determines a protein's function?
color
shape
size
temperature
Q.15.
The substances listed on the left side of a chemical equation are the
Products
Coefficients
Precipitates
Reactants
Q.16.
What particles are found in the nucleus of an atom?
electron and proton
proton and neutron
electron and neutron
Q.17.
Water is classified as an inorganic compound because it
does not contain carbon
does not contain nitrogen
contains hydrogen
contains oxygen
Q.18.
To which class of organic compounds do enzymes belong?
proteins
fatty acids
nucleic acids
monosaccharides
Q.19.
What is the ratio of hydrogen to oxygen in carbohydrates?
1:1
2:1
3:1
4:1
Q.20.
What is the function of carbohydrates in your body?
Speed up chemical reactions.
Give immediate energy.
Help to store energy.
Build cell walls in plants.
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